/*
    VLDocking Framework 3.0
    Copyright Lilian Chamontin, 2004-2013
    
    www.vldocking.com
    vldocking@googlegroups.com
------------------------------------------------------------------------
This software is distributed under the LGPL license

The fact that you are presently reading this and using this class means that you have had
knowledge of the LGPL license and that you accept its terms.

You can read the complete license here :

    http://www.gnu.org/licenses/lgpl.html

*/

package com.vldocking.swing.docking;

import com.vldocking.swing.tabbedpane.JTabbedPaneSmartIcon;
import com.vldocking.swing.tabbedpane.JTabbedPaneSmartIconManager;
import com.vldocking.swing.tabbedpane.SmartIconJButton;
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.util.ArrayList;
import javax.swing.AbstractAction;
import javax.swing.Icon;
import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;
import javax.swing.JTabbedPane;
import javax.swing.KeyStroke;
import javax.swing.UIManager;

/** This component is used to display single dockables like if they were in a tabbed pane.
 * <p>
 * Please note this component is still in its early stages and might change in future releases.
 * <p>
 * To use it, just install the TabFactory as DockableContainerFactory
 *
 * @author Lilian Chamontin, VLSolutions
 * @see TabFactory
 * @since 2.1.3
 */
@SuppressWarnings({"rawtypes", "unchecked", "unused"})
public class DockViewAsTab extends DockView implements SingleDockableContainer {

	private static final long serialVersionUID = 1L;
	private static final String CLOSE_TEXT = UIManager.getString("DockViewTitleBar.closeButtonText");
	private static final String ICONIFY_TEXT = UIManager.getString("DockViewTitleBar.minimizeButtonText");
	private static final String RESTORE_TEXT = UIManager.getString("DockViewTitleBar.restoreButtonText");
	private static final String MAXIMIZE_TEXT = UIManager.getString("DockViewTitleBar.maximizeButtonText");
	private static final String FLOAT_TEXT = UIManager.getString("DockViewTitleBar.floatButtonText");
	private static final String ATTACH_TEXT = UIManager.getString("DockViewTitleBar.attachButtonText");

	private static Icon closeIcon = UIManager.getIcon("DockViewTitleBar.menu.close");
	private static Icon maximizeIcon = UIManager.getIcon("DockViewTitleBar.menu.maximize");
	private static Icon restoreIcon = UIManager.getIcon("DockViewTitleBar.menu.restore");
	private static Icon hideIcon = UIManager.getIcon("DockViewTitleBar.menu.hide");
	private static Icon dockIcon = UIManager.getIcon("DockViewTitleBar.menu.dock");
	private static Icon floatIcon = UIManager.getIcon("DockViewTitleBar.menu.float");
	private static Icon attachIcon = UIManager.getIcon("DockViewTitleBar.menu.attach");

	/** The tab container in which the components are added */
	protected TabHeader tabHeader = createTabHeader();

	/** smart icon manager */
	protected JTabbedPaneSmartIconManager tpManager = new JTabbedPaneSmartIconManager(tabHeader);

	/** smart icon used to display the title  */
	protected JTabbedPaneSmartIcon smartIcon = new JTabbedPaneSmartIcon(null, " ", null);

	protected AbstractAction closeAction = new AbstractAction("Close") {

		private static final long serialVersionUID = 1L;

		public void actionPerformed(ActionEvent e) {
			desktop.close(getDockable());
		}
	};
	protected SmartIconJButton closeSmartIcon = new SmartIconJButton(closeAction);

	protected AbstractAction maximizeAction = new AbstractAction("Maximize") {

		private static final long serialVersionUID = 1L;

		public void actionPerformed(ActionEvent e) {
			maximizeAction();
		}
	};
	protected SmartIconJButton maximizeSmartIcon = new SmartIconJButton(maximizeAction);

	protected AbstractAction hideAction = new AbstractAction("Hide") {

		private static final long serialVersionUID = 1L;

		public void actionPerformed(ActionEvent e) {
			desktop.setAutoHide(getDockable(), true);
		}
	};
	protected SmartIconJButton hideSmartIcon = new SmartIconJButton(hideAction);

	protected AbstractAction floatAction = new AbstractAction("Float") {

		private static final long serialVersionUID = 1L;

		public void actionPerformed(ActionEvent e) {
			desktop.setFloating(getDockable(), true);
		}
	};

	protected SmartIconJButton floatSmartIcon = new SmartIconJButton(floatAction);

	// flags to hide/show buttons in the title bar (they are always visible in the contextual menu, but might
	// take too much space on the titles (for example a minimum set could be hide/float/close
	//  as maximize is accessed by double click)
	protected boolean isCloseButtonDisplayed = UIManager.getBoolean("DockViewTitleBar.isCloseButtonDisplayed");
	protected boolean isHideButtonDisplayed = UIManager.getBoolean("DockViewTitleBar.isHideButtonDisplayed");
	protected boolean isDockButtonDisplayed = UIManager.getBoolean("DockViewTitleBar.isDockButtonDisplayed");
	protected boolean isMaximizeButtonDisplayed = UIManager.getBoolean("DockViewTitleBar.isMaximizeButtonDisplayed");
	protected boolean isRestoreButtonDisplayed = UIManager.getBoolean("DockViewTitleBar.isRestoreButtonDisplayed");
	protected boolean isFloatButtonDisplayed = UIManager.getBoolean("DockViewTitleBar.isFloatButtonDisplayed");
	protected boolean isAttachButtonDisplayed = UIManager.getBoolean("DockViewTitleBar.isAttachButtonDisplayed");

	/** listen to the key changes */
	private PropertyChangeListener keyListener = new PropertyChangeListener() {

		public void propertyChange(PropertyChangeEvent e) {
			String pName = e.getPropertyName();
			if(pName.equals(DockKey.PROPERTY_ICON)) {
				smartIcon.setIcon((Icon) e.getNewValue());
			} else if(pName.equals(DockKey.PROPERTY_NAME)) {
				smartIcon.setLabel((String) e.getNewValue());
				revalidate();
			} else if(pName.equals(DockKey.PROPERTY_TOOLTIP)) {
				smartIcon.setTooltipText((String) e.getNewValue());
			} else if(pName.equals(DockKey.PROPERTY_AUTOHIDEABLE)) {
				resetTabIcons();
			} else if(pName.equals(DockKey.PROPERTY_CLOSEABLE)) {
				resetTabIcons();
			} else if(pName.equals(DockKey.PROPERTY_FLOATABLE)) {
				resetTabIcons();
			} else if(pName.equals(DockKey.PROPERTY_MAXIMIZABLE)) {
				resetTabIcons();
			}
		}
	};

	private JPopupMenu currentPopUp = null;

	/** reacts to single and double click on title bar */
	private MouseListener titleMouseListener = new MouseAdapter() {

		public void mouseClicked(MouseEvent e) {
			if(e.getClickCount() == 2) {
				maximizeAction();
			} else {
				getDockable().getComponent().requestFocus();
			}
		}

		public void mousePressed(MouseEvent e) {
			if(e.isPopupTrigger()) {
				checkForPopUp(e);
			}
		}

		public void mouseReleased(MouseEvent e) {
			if(e.isPopupTrigger()) {
				checkForPopUp(e);
			}
		}
	};

	private ActionListener actionListener = new ActionListener() {

		public void actionPerformed(ActionEvent e) {
			if(e.getActionCommand().equals("dock")) {
				dockAction();
			} else if(e.getActionCommand().equals("close")) {
				closeAction();
			} else if(e.getActionCommand().equals("maximize")) {
				maximizeAction();
			} else if(e.getActionCommand().equals("float")) {
				floatAction();
			}
		}
	};

	public DockViewAsTab(Dockable dockable) {
		super(dockable, false);
		add(tabHeader, BorderLayout.CENTER);
		tabHeader.addMouseListener(titleMouseListener);
		configureCloseButton();
		configureHideButton();
		configureMaximizeButton();
		configureFloatButton();
		setDockableAsTab(dockable);

	}

	private void checkForPopUp(MouseEvent e) {
		Dockable target = getDockable();
		JPopupMenu popup = new JPopupMenu(target.getDockKey().getName());
		// first add the standard menu
		DockKey key = target.getDockKey();
		switch(key.getLocation()) {
			case DOCKED:
				initDockedPopUp(popup);
				break;
			case HIDDEN:
				//initAutoHidePopUp(popup);
				break;
			case MAXIMIZED:
				initMaximizedPopUp(popup);
				break;
			case FLOATING:
				initFloatingPopUp(popup);
				break;
			default:
				// nothing to do
		}

		DockableActionCustomizer customizer = target.getDockKey().getActionCustomizer();
		if(customizer != null && customizer.isSingleDockableTitleBarPopUpCustomizer()) {
			if(popup.getComponentCount() > 0) {
				popup.addSeparator();
			}
			customizer.visitSingleDockableTitleBarPopUp(popup, target);
		}
		if(popup.getComponentCount() > 0) {
			popup.show(tabHeader, e.getX(), e.getY());
			this.currentPopUp = popup;
		}
	}

	private JMenuItem createPopUpItem(String text, Icon icon, String tooltip, String actionCommand, KeyStroke accelerator) {
		JMenuItem menuItem = new JMenuItem(text, icon);
		menuItem.setActionCommand(actionCommand);
		menuItem.addActionListener(actionListener);
		if(accelerator != null) {
			menuItem.setAccelerator(accelerator);
		}
		return menuItem;
	}

	/** Init the popup displayed as the title bar contextual menu */
	protected void initMaximizedPopUp(JPopupMenu popup) {

		popup.add(createPopUpItem(RESTORE_TEXT, restoreIcon, RESTORE_TEXT, "maximize", (KeyStroke) UIManager.get("DockingDesktop.maximizeActionAccelerator")));
	}

	protected void initAutoHidePopUp(JPopupMenu popup) {
		if(DockingUtilities.isChildOfCompoundDockable(getDockable())) {
			// restore option not allowed for children of a compound dockable
		} else {
			popup.add(createPopUpItem(RESTORE_TEXT, dockIcon, RESTORE_TEXT, "dock", (KeyStroke) UIManager.get("DockingDesktop.dockActionAccelerator")));
		}
		if(getDockable().getDockKey().isCloseEnabled()) {
			popup.add(createPopUpItem(CLOSE_TEXT, closeSmartIcon, CLOSE_TEXT, "close", (KeyStroke) UIManager.get("DockingDesktop.closeActionAccelerator")));
		}
	}

	protected void initDockedPopUp(JPopupMenu popup) {
		DockKey key = getDockable().getDockKey();
		if(key.isAutoHideEnabled()) {
			popup.add(createPopUpItem(ICONIFY_TEXT, hideSmartIcon, ICONIFY_TEXT, "dock", (KeyStroke) UIManager.get("DockingDesktop.dockActionAccelerator")));
		}
		if(key.isFloatEnabled()) {
			popup.add(createPopUpItem(FLOAT_TEXT, floatSmartIcon, FLOAT_TEXT, "float", (KeyStroke) UIManager.get("DockingDesktop.floatActionAccelerator")));
		}
		if(key.isMaximizeEnabled()) {
			popup.add(createPopUpItem(MAXIMIZE_TEXT, maximizeSmartIcon, MAXIMIZE_TEXT, "maximize", (KeyStroke) UIManager.get("DockingDesktop.maximizeActionAccelerator")));
		}
		if(key.isCloseEnabled()) {
			popup.add(createPopUpItem(CLOSE_TEXT, closeSmartIcon, CLOSE_TEXT, "close", (KeyStroke) UIManager.get("DockingDesktop.closeActionAccelerator")));
		}
	}

	/** Init the popup displayed as the title bar contextual menu */
	protected void initFloatingPopUp(JPopupMenu popup) {
		if(DockingUtilities.isChildOfCompoundDockable(getDockable())) {
			// attach option not allowed for children of a compound dockable
		} else {
			popup.add(createPopUpItem(ATTACH_TEXT, attachIcon, ATTACH_TEXT, "float", (KeyStroke) UIManager.get("DockingDesktop.floatActionAccelerator")));
		}
	}

	/** This method is invoked to hide the pop-up that could still be visible
	 * (To avoid a visible pop-up for an invisible component)
	 */
	public void closePopUp() {
		if(currentPopUp != null) {
			currentPopUp.setVisible(false);
			// @todo uncertain about correct gc of the pop-up in that case
			currentPopUp = null;
		}
	}

	private void dockAction() {
		if(isAutoHide()) {
			desktop.setAutoHide(getDockable(), false);
		} else {
			desktop.setAutoHide(getDockable(), true);
		}

	}

	protected void maximizeAction() {
		if(isMaximized()) {
			desktop.restore(getDockable());
		} else {
			desktop.maximize(getDockable());
		}
	}

	private void closeAction() {
		desktop.close(getDockable());
	}

	private void floatAction() {
		if(getDockable().getDockKey().getLocation() == DockableState.Location.FLOATING) {
			desktop.setFloating(getDockable(), true);
		} else {
			desktop.setFloating(getDockable(), false);
		}
	}

	private boolean isAutoHide() {
		return getDockable().getDockKey().getLocation() == DockableState.Location.HIDDEN;
	}

	private boolean isMaximized() {
		return getDockable().getDockKey().getLocation() == DockableState.Location.MAXIMIZED;
	}

	protected void configureFloatButton() {

		if(isFloatButtonDisplayed) {
			floatSmartIcon.setIcon(UIManager.getIcon("DockViewTitleBar.float"));
			floatSmartIcon.setPressedIcon(UIManager.getIcon("DockViewTitleBar.float.pressed"));
			floatSmartIcon.setRolloverIcon(UIManager.getIcon("DockViewTitleBar.float.rollover"));
			// add a tooltip
			floatAction.putValue(AbstractAction.SHORT_DESCRIPTION, UIManager.get("DockViewTitleBar.floatButtonText"));
		}
	}

	protected void configureMaximizeButton() {
		if(isMaximizeButtonDisplayed) {

			maximizeSmartIcon.setIcon(UIManager.getIcon("DockViewTitleBar.maximize"));
			maximizeSmartIcon.setPressedIcon(UIManager.getIcon("DockViewTitleBar.maximize.pressed"));
			maximizeSmartIcon.setRolloverIcon(UIManager.getIcon("DockViewTitleBar.maximize.rollover"));
			// add a tooltip
			maximizeAction.putValue(AbstractAction.SHORT_DESCRIPTION, UIManager.get("DockViewTitleBar.maximizeButtonText"));
		}

	}

	protected void configureHideButton() {

		if(isHideButtonDisplayed) {
			hideSmartIcon.setIcon(UIManager.getIcon("DockViewTitleBar.hide"));
			hideSmartIcon.setPressedIcon(UIManager.getIcon("DockViewTitleBar.hide.pressed"));
			hideSmartIcon.setRolloverIcon(UIManager.getIcon("DockViewTitleBar.hide.rollover"));
			// add a tooltip
			hideAction.putValue(AbstractAction.SHORT_DESCRIPTION, UIManager.get("DockViewTitleBar.minimizeButtonText"));
		}
	}

	protected void configureCloseButton() {

		if(isCloseButtonDisplayed) {
			closeSmartIcon.setIcon(UIManager.getIcon("DockTabbedPane.close"));
			closeSmartIcon.setPressedIcon(UIManager.getIcon("DockTabbedPane.close.pressed"));
			closeSmartIcon.setRolloverIcon(UIManager.getIcon("DockTabbedPane.close.rollover"));
			// add a tooltip
			closeAction.putValue(AbstractAction.SHORT_DESCRIPTION, UIManager.get("DockTabbedPane.closeButtonText"));
		}
	}

	public void setDockable(Dockable d) {
		// overriden to disable DockView settings
	}

	public void setDockableAsTab(final Dockable d) {
		this.dockable = d;
		if(title != null) { // still needed as removeing it triggers Exception... we'll have to
			// remove it one day (when building a proper ui class)
			title.setDockable(dockable);
		}

		resetTabIcons();

		// allow resizing  of split pane beyond minimum size
		// could be replaced by adding a JScrollPane instead of panels
		setMinimumSize(new Dimension(30, 30));
	}

	public void resetTabIcons() {
		ArrayList icons = new ArrayList();
		DockKey k = getDockable().getDockKey();
		if(k.isCloseEnabled() && isCloseButtonDisplayed) {
			icons.add(closeSmartIcon);
		}
		if(k.isMaximizeEnabled() && isMaximizeButtonDisplayed) {
			icons.add(maximizeSmartIcon);
		}
		if(k.isAutoHideEnabled() && isHideButtonDisplayed) {
			icons.add(hideSmartIcon);
		}
		if(k.isFloatEnabled() && isFloatButtonDisplayed) {
			icons.add(floatSmartIcon);
		}

		// this is an attempt to create the set of icons displayed for this dockable
		// currently, only "close" is managed, but other buttons could be added, as
		// the jTabebdPaneSmartIcon supports(simulates) many sub-buttons.
		if(icons.size() > 0) {
			SmartIconJButton[] iconsArray = (SmartIconJButton[]) icons.toArray(new SmartIconJButton[0]);
			smartIcon = new JTabbedPaneSmartIcon(k.getIcon(), k.getName(), iconsArray);
			smartIcon.setIconForTabbedPane(tabHeader);
			tabHeader.addTab("", smartIcon, getDockable().getComponent());
		} else {
			tabHeader.addTab(k.getName(), k.getIcon(), getDockable().getComponent());
		}

	}

	/** {@inheritDoc} */
	public void installDocking(DockingDesktop desktop) {
		this.desktop = desktop;
		desktop.installDockableDragSource(tabHeader);
		dockable.getDockKey().addPropertyChangeListener(keyListener);
	}

	/** {@inheritDoc} */
	public void uninstallDocking(DockingDesktop desktop) {
		desktop.uninstallDockableDragSource(tabHeader);
		dockable.getDockKey().removePropertyChangeListener(keyListener);
	}

	public String getUIClassID() {
		return "PanelUI";  // default panel UI
	}

	protected TabHeader createTabHeader() {
		return new TabHeader();
	}

	protected class TabHeader extends JTabbedPane implements DockableDragSource {

		private static final long serialVersionUID = 1L;

		public boolean startDragComponent(Point p) {
			Rectangle bounds = getBoundsAt(0);
			return bounds.contains(p);
		}

		public Container getDockableContainer() {
			return DockViewAsTab.this;
		}

		public Dockable getDockable() {
			return dockable;
		}

		public void endDragComponent(boolean dropped) {}

	}

}
